Quantcast

Search results

  1. andrextr

    An even bigger tantrum?

    Relatively high chaingrowth and kicback and relatively forward axle path. Leverage ratio is OK for a 160mm bike
  2. andrextr

    [Videos] MTB Rear suspension series

    New video! :D
  3. andrextr

    Slayer suspension analysis

    I don't like crack... specially on chainstays :D I only saw this thread today, any question you can ask. PS: new awesome video full of crack next week. Bye
  4. andrextr

    [Videos] MTB Rear suspension series

    FREE Air Spring Simulator :cheers: Download link: https://goo.gl/2kQOCv Happy new year. Bye
  5. andrextr

    [Videos] MTB Rear suspension series

    New video, after almost half an year! :D
  6. andrextr

    [Videos] MTB Rear suspension series

    Easy and intuitive explanation of Anti-squat :) Hope you like it :) Bye
  7. andrextr

    [Videos] MTB Rear suspension series

    Hello people :) Just want to share a quick video about the brake-squat effect principle, I know that these type of videos were already done, but it's always nice to see it. It would even nicer to do this with a bike with a IC below the ground to see the jack effect (extension of the...
  8. andrextr

    [Videos] MTB Rear suspension series

    I'm not sure if I understand the previous comment, but.... I will bring my view to the table: A lower anti-squat doesn't mean that the pedaling force compress the suspension. That only happens with negative anti-squat values (in this case, chain tension compresses the suspension. eg...
  9. andrextr

    [Videos] MTB Rear suspension series

    Thank you hmcleay for sharing your knowledge :) Nice to see here so many deep content :) As you point out, CC can also be helpful to visualize the IC movement in more exotic cases, such as the Rocky mountain maiden, here the IC also starts behind the wheel, then it goes back to the infinite and...
  10. andrextr

    [Videos] MTB Rear suspension series

    Yes, I agree. Many people think the CC is the virtual pivot, and there are even some brands that contribute to that confusion.... Like the usual G brand... To be fully clear to everyone, the point 2 of the image is not the IC. It's the center of curvature (CC), and you can basically ignore...
  11. andrextr

    [Videos] MTB Rear suspension series

    Vrock are you Antonio Osuna? Thanks for sharing your knowledge :) As a curiosity, do you know any example here the CC is not within the IC-axle line? I know this is very "nerdy", and I don't want to go super tech with this, but it's just a curiosity.
  12. andrextr

    [Videos] MTB Rear suspension series

    It's not easy to understand if it changes or not, already saw some contraditory info on the net and from suspension designers... But anyway, regarding @rbk comment about the center of curvature (CC) vs IC for anti-squat determination. I said that you need to use IC, but indeed you also can use...
  13. andrextr

    [Videos] MTB Rear suspension series

    Hi. I never used CC (center of curvature) for that... What I know is that the IC is used both for braking and for acceleration behavior (anti-squat). The anti-squat % is a result of the IC position, the rear axle position, and the chain-line. In the case of the image below, the chainline angle...
  14. andrextr

    [Videos] MTB Rear suspension series

    I'm not an expert, and I'm not sure about this, but according to a quick search some people say it doesn't change others say it does. If it does, it should be in a similar way than compressing or extending the front suspension (a basic tilt). If true, thus, per each 10º of uphill incline the AS...
  15. andrextr

    2016 Devinci Troy Write-Up

    Nice review! If you don't mind I would like to add more info and numbers to the thread. Bye :)
  16. andrextr

    [Videos] MTB Rear suspension series

    Hi, the CoG height is what determines the 100%. If the line of anti-rise (aka brake-squat) or anti-squat crosses at the CoG heigth rightly above the front wheel axle them you have 100% (see image below). If it crosses on the ground it's 0%. (note: the AR value on the image is 50% for this...
  17. andrextr

    [Videos] MTB Rear suspension series

    Just to share my new video, about the instant center (virtual pivot). Although it's a bit long, I think it's a quite important video to understand better the kinematics of the suspension :) I tried to make it interesting. Hope you like it. Bye :)
  18. andrextr

    [Videos] MTB Rear suspension series

    Hi @Jm_ Yes, you are right, the ideal AS should be stable on the first 50% of travel at least (pedaling zone), and then drop down (like Santa Cruz VPP bikes for instance). The reason that AS should fall at the end of the travel is to decrease the amount of pedal kickback (and because you don't...
  19. andrextr

    The Zerode thread

    Thank you, that perfectly matches with the graphs (numbers don't lie eheh)! :) I never tested a bike with such a rearward travel, I would like to test that :) Bye
  20. andrextr

    The Zerode thread

    Hello guys! Just finished the Zerode G2 suspension analysis. How do you think the analysis results compare with your feelings on the G2? I'm particularly interested on the braking issue. I don't think it's very important, but who knows... Bye
Top Bottom